void CameraHardwareStub::initDefaultParameters()
{
CameraParameters p;
p.setPreviewSize(176, 144);
p.setPreviewFrameRate(15);
p.setPreviewFormat("yuv422sp");
p.setPictureSize(kCannedJpegWidth, kCannedJpegHeight);
p.setPictureFormat("jpeg");
if (setParameters(p) != NO_ERROR) {
LOGE("Failed to set default parameters?!");
}
}
void CameraHardware::initDefaultParameters()
{
CameraParameters p;
p.setPreviewSize(160, 120);
p.setPreviewFrameRate(15);
p.setPreviewFormat("rgb565");
p.setPictureSize(640, 480);
p.setPictureFormat("rgb565");
if (setParameters(p) != NO_ERROR) {
LOGE("Failed to set default parameters?!");
}
}
void CameraHardwareStub::initDefaultParameters()
{
CameraParameters p;
p.set(CameraParameters::KEY_SUPPORTED_PREVIEW_SIZES, "320x240");
p.setPreviewSize(320, 240);
p.setPreviewFrameRate(15);
p.setPreviewFormat(CameraParameters::PIXEL_FORMAT_YUV420SP);
p.set(CameraParameters::KEY_SUPPORTED_PICTURE_SIZES, "320x240");
p.setPictureSize(320, 240);
p.setPictureFormat(CameraParameters::PIXEL_FORMAT_JPEG);
if (setParameters(p) != NO_ERROR) {
LOGE("Failed to set default parameters?!");
}
}
NS_IMETHODIMP
GonkCameraInputStream::Init(nsACString& aContentType, nsCaptureParams* aParams)
{
if (XRE_GetProcessType() != GeckoProcessType_Default)
return NS_ERROR_NOT_IMPLEMENTED;
mContentType = aContentType;
mWidth = aParams->width;
mHeight = aParams->height;
mCamera = aParams->camera;
PRUint32 maxNumCameras = getNumberOfCameras();
if (maxNumCameras == 0)
return NS_ERROR_FAILURE;
if (mCamera >= maxNumCameras)
mCamera = 0;
mHardware = CameraHardwareInterface::openCamera(mCamera);
if (!mHardware)
return NS_ERROR_FAILURE;
mHardware->setCallbacks(NULL, GonkCameraInputStream::DataCallback, NULL, this);
mHardware->enableMsgType(CAMERA_MSG_PREVIEW_FRAME);
CameraParameters params = mHardware->getParameters();
printf_stderr("Preview format : %s\n", params.get(params.KEY_SUPPORTED_PREVIEW_FORMATS));
Vector<Size> previewSizes;
params.getSupportedPreviewSizes(previewSizes);
// find the available preview size closest to the requested size.
PRUint32 minSizeDelta = PR_UINT32_MAX;
PRUint32 bestWidth = mWidth;
PRUint32 bestHeight = mHeight;
for (PRUint32 i = 0; i < previewSizes.size(); i++) {
Size size = previewSizes[i];
PRUint32 delta = abs(size.width * size.height - mWidth * mHeight);
if (delta < minSizeDelta) {
minSizeDelta = delta;
bestWidth = size.width;
bestHeight = size.height;
}
}
mWidth = bestWidth;
mHeight = bestHeight;
params.setPreviewSize(mWidth, mHeight);
// try to set preferred image format
params.setPreviewFormat("yuv420p");
params.setPreviewFrameRate(mFps);
mHardware->setParameters(params);
params = mHardware->getParameters();
mFps = params.getPreviewFrameRate();
mIs420p = !strcmp(params.getPreviewFormat(), "yuv420p");
mHardware->startPreview();
mClosed = false;
return NS_OK;
}
